## Check if given sudoku is valid or not

Problem: Given a filled sudoku, write a program to check if sudoku is valid or following all of its rules. SUDOKU rules: Each column contains all of the digits from 1 to 9 only once. Each row contains all of the digits from 1 to 9 only once. Each of the nine 3×3 sub-grid contains … Read more Check if given sudoku is valid or not